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authorDaniel Walter <dwalter@sigma-star.at>2015-11-18 17:15:49 +0100
committerFelipe Balbi <balbi@ti.com>2015-11-18 15:09:26 -0600
commit7fe9a937d5156761cf79dc354f616c726b5c09e2 (patch)
treea70d213367d46deeffa4cc8943c7502cfc1f41bd /drivers/usb/gadget/function/f_fs.c
parent183e53e8ddf4165c3763181682189362d6b403f7 (diff)
usb: gadget: functionfs: fix missing access_ok checks
use safe copy_*_user instead of unsafe __copy_*_user functions when accessing userland memory. Signed-off-by: Daniel Walter <dwalter@sigma-star.at> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/function/f_fs.c')
-rw-r--r--drivers/usb/gadget/function/f_fs.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index adc6d52efa46..cf43e9e18368 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -423,7 +423,7 @@ static ssize_t __ffs_ep0_read_events(struct ffs_data *ffs, char __user *buf,
spin_unlock_irq(&ffs->ev.waitq.lock);
mutex_unlock(&ffs->mutex);
- return unlikely(__copy_to_user(buf, events, size)) ? -EFAULT : size;
+ return unlikely(copy_to_user(buf, events, size)) ? -EFAULT : size;
}
static ssize_t ffs_ep0_read(struct file *file, char __user *buf,
@@ -513,7 +513,7 @@ static ssize_t ffs_ep0_read(struct file *file, char __user *buf,
/* unlocks spinlock */
ret = __ffs_ep0_queue_wait(ffs, data, len);
- if (likely(ret > 0) && unlikely(__copy_to_user(buf, data, len)))
+ if (likely(ret > 0) && unlikely(copy_to_user(buf, data, len)))
ret = -EFAULT;
goto done_mutex;
@@ -3493,7 +3493,7 @@ static char *ffs_prepare_buffer(const char __user *buf, size_t len)
if (unlikely(!data))
return ERR_PTR(-ENOMEM);
- if (unlikely(__copy_from_user(data, buf, len))) {
+ if (unlikely(copy_from_user(data, buf, len))) {
kfree(data);
return ERR_PTR(-EFAULT);
}